This memorial pyramid marker honors one of the United States Government's first official camel riders.

Opinions differ as to whether this Arizona tree was actually used as a Wild West jail, but that hasn't stopped the town from capitalizing on it.

Stairs often replace streets on the steep slopes of this old mining town.

Sleep where gangsters fell amidst smoke and flame, with nary a bullethole to show for the legendary struggle.

The massive, incredibly rare instrument is over 11 feet tall with a range so deep it goes lower than humans can hear.

A Wild West jailhouse that slid down the mountainside.

A living snapshot of a different time in America is preserved and maintained by a community of volunteers.

A pair of giant roadside arrows are all that remains of a former Route 66 trading post.

This immigrant bridge once spanned the Thames but is now a fixture of an Arizona city.

An old saloon in the West filled with history, and according to some, a few dozen ghosts.

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

Most-visited and most-photographed slot canyon in the American Southwest.

Dramatic river bend surrounds a natural red-rocked pedestal.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

The installation’s official name, “You Who Are Getting Obliterated in the Dancing Swarm of Fireflies,” says it all.

A reproduction of earth's many biomes.

Eons ago, a rushing lava river formed this pristine passage through solid rock.

An urban laboratory.

Limestone caves with spectacular showcase chambers.

Some of the tallest ancient American ruins continue to inspire awe and curiosity.

This striking public art installation is suspended above a public park, designed to gently move in the breeze.

A wild west cemetery in Tombstone, Arizona, provides a window into the Old West.

Ancient pueblos built into the base of a natural canyon wall.

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